@@ -35,11 +35,11 @@
 # include <proto/intuition.h>
 # undef Class
 # undef __NOLIBBASE__
 #endif
 
-static objc_enumeration_mutation_handler_t enumerationMutationHandler = NULL;
+static objc_enumeration_mutation_handler enumerationMutationHandler = NULL;
 
 void
 objc_enumerationMutation(id object)
 {
 	if (enumerationMutationHandler != NULL)
@@ -47,27 +47,27 @@
 	else
 		OBJC_ERROR("Object was mutated during enumeration!");
 }
 
 void
-objc_setEnumerationMutationHandler(objc_enumeration_mutation_handler_t handler)
+objc_setEnumerationMutationHandler(objc_enumeration_mutation_handler handler)
 {
 	enumerationMutationHandler = handler;
 }
 
 void
 objc_error(const char *title, const char *format, ...)
 {
 #if defined(OF_WINDOWS) || defined(OF_AMIGAOS)
-# define BUF_LEN 512
-	char message[BUF_LEN];
+# define messageLen 512
+	char message[messageLen];
 	int status;
 	va_list args;
 
 	va_start(args, format);
-	status = vsnprintf(message, BUF_LEN, format, args);
-	if (status <= 0 || status >= BUF_LEN)
+	status = vsnprintf(message, messageLen, format, args);
+	if (status <= 0 || status >= messageLen)
 		message[0] = '\0';
 	va_end(args);
 # undef BUF_LEN
 #endif
 
@@ -129,5 +129,19 @@
 	abort();
 #endif
 
 	OF_UNREACHABLE
 }
+
+char *
+objc_strdup(const char *string)
+{
+	char *copy;
+	size_t length = strlen(string);
+
+	if ((copy = (char *)malloc(length + 1)) == NULL)
+		return NULL;
+
+	memcpy(copy, string, length + 1);
+
+	return copy;
+}